Length answers the question, "How tall, wide, or far is it?"
The Egyptians have evidence that proves that they may be the earliest civilization that discovered a standard unit for length. The Egyptian cubit was developed about 3000 BC, the unit was based on the length of the arm (from the elbow to the extended finger).
The Greeks used the width of 16 fingers to find one foot. The Romans adopted the foot from the Greeks and divided it into 12 sections which was called unicae, which came to be known as an inch.
The yard was adopted by King Henry I in the 12th century. Many years ago, the US accepted this standard of measurement from London into our customary system.
When measuring length in the customary system the common units used are inches, feet, yards, and miles. Units of length measure height, width, length, depth, and distance.
People use "feet" to measure their height. Construction worker and architects use feet to measure walls, floors, and ceilings. It is also used to determine one point to another.
The end of your thumb to your first joint is about 1 inch long.
An egg carton is about a foot long.
A standard doorway is about a yard in width. A man sixfeet tall is 2 yards high.
Distances between cities are measured in miles.
From smallest to greatest length measurements are compared as:
Miles
When reading a ruler, you want to find out how far the item is from zero. When reading a ruler, you must locate the zero marking, this may vary depending on the ruler. On some rulers, the zeros start at the end, but on others it starts about 1/4 of an inch from the end. If you do not check your ruler beforehand you will not be getting an accurate measurement.



















When converting any unit of measurements if you want:
Click on the pencil of the measurement which accurately answers the amount of length each item would be.
1. The length of
a river
25 inches 25 miles
2. The size of the length of a photo
7 inches 7 feet
3. The thickness of a phonebook
4 feet 4 inches
4. The height of a child's bicycle
20 feet 20 inches
5. The depth of water in a bathtub
8 inches 8 feet
Answer the next questions on a sheet of paper and turn them in when you have completed them.
Write the equivalents.
6) 6 inches = ______foot
7) 10 feet = _____yards_____feet
8) 30 feet = ________inches
9) 7,258 feet = _____ miles _____yards _____feet
10) 5,789 yards = _______miles______yards
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